Restorative Dentistry and Endodontics
- Volume 21 Issue 1
- /
- Pages.150-160
- /
- 1996
- /
- 2234-7658(pISSN)
- /
- 2234-7666(eISSN)
The accuracy of the frequency dependent type apex locator
주파수의존형 전자근관장측정기의 정확도에 관한 연구
- Park, Ju-Huun (Department of Conservative Dentistry, College of Dentistry, Yonsei University) ;
- Roh, Byoung-Duck (Department of Conservative Dentistry, College of Dentistry, Yonsei University) ;
-
Lee, Seoung-Jong
(Department of Conservative Dentistry, College of Dentistry, Yonsei University)
- Published : 1996.03.20
Abstract
The present study was to evaluate the accuracy of the frequency dependent type apex locator, Root-ZX. The subjects included 505 root canals of 238 teeth treated by the Department of Conservative Dentistry, and 22 human premolars which were schduled to be extracted for the orthodontic reasons. The results were as follows ; 1. The working lengths determined by Root-ZX were compared with radiographic readings. Of the total 505 root canals, 66 % showed coincidence within